FLEXURAL BEHAVIOUR OF CONCRETE BEAMS REINFORCED WITH GLASS FIBRE REINFORCED POLYMER BARS
DOI:
https://doi.org/10.11113/mjce.v17.15672Keywords:
GFRP, Stainless Steel, Concrete Beams, Flexural BehaviourAbstract
Corrosion of steel reinforcement is one of the main problems facing the construction industries throughout the world. Many methods have been used to minimize the problem but without success. Thus, more durable reinforcements are highly needed to replace conventional steel. Glass Fibre Reinforced Polymer (GFRP) bars provide a good alternative reinforcement due to its non-corrodible characteristic. This paper presents the flexural behaviour of concrete beams, each measuring 150 x 255 x 2400 mm and reinforced with GFRP and stainless steel bars. The performance of the beams was analysed in terms of their load carrying capacity, load-deflection, load-concrete strain, load-reinforcement strain, cracking and mode of failure. The experimental results show that beams reinforced with GFRP bars experienced lower ultimate load, lower stiffness, and larger deflection at the same load level compared with control beam. However, the performance of the GFRP reinforced concrete beams improved slightly when stainless steel mesh was used as shear reinforcement.References
Clark, J. L. (1994) Fibre composites for the reinforcement of concrete. In F. K. Garas, G. S. T. Armer and J. L. Clark (eds.) Building the Future- Innovation in Design, Materials and Construction,, E&FN SPON, London, pp. 183-191.
Fanning, P. J., and Kelly, O. (2001) Ultimate response of RC beams strengthened with CFRP plates. Journal of Composite for Construction, 5(2): 122-127.
Mohd.Sam, A.R. (1999) Flexural Behaviour and Durability of Glass Fibre Reinforced Polymer and Stainless Steel Bars as Beam Reinforcement. PhD Thesis, University of Sheffield, U.K, 304 pp.
Mohd.Sam, A.R., Abu Hassan, S. and Cheong, C. H. (2002) The flexural behaviour of reinforced concrete beams strengthened with CFRP plates. Proc. of the Research Seminar on Materials and Construction, Universiti Teknologi Malaysia, Johor, pp. 49-55.
Osborne, G. J. (1998) Durability of Portland Blastfurnace Cement. Joe G. Cabrera Symposium on Durability of Concrete Materials. Ed. Swamy, R.N., 79-99.
Saadatmanesh, H., (1994) Fibre composites for new and existing structures. ACI Structural Journal, 91(3): 346-354.
Taerwe, L. R., and Matthys, S. (1999) FRP for concrete construction. Concrete International, 21(10): 33-36.